BW ends & "Cryogenic Bench" for pressure Testing of Valves

[NGiLuzzu]

Have You ever faced the problems due to the application of test caps to butt-weld ends for cryogenic testing?

Or did anyone ever feel the need of a test bench... capable of pressurizing liquid nitrogen (for instance) in stead of air or water?

Please refer to Thread774-127182 (within the "Cryogenic Engineering Forum").

Thanks to all, 'NGL